<template>
  <div>
      <!-- 面包屑导航区域 -->
      <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>商品管理</el-breadcrumb-item>
        <el-breadcrumb-item>商品列表</el-breadcrumb-item>
      </el-breadcrumb>

      <!-- 卡片视图区域 -->
      <el-card class="box-card">
          <!-- 搜索与添加区域 -->
        <el-row :gutter="100">
            <el-col :span="8">
              <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodsListData">
                 <el-button slot="append" icon="el-icon-search" @click="getGoodsListData"></el-button>
              </el-input>
            </el-col>
            <el-col :span="4">
                <el-button type="primary" @click="goAddpage">添加商品</el-button>
            </el-col>
        </el-row>

         <!-- 商品列表区域 -->
        <el-table stripe border :data="goodsData" style="width: 100%">
            <!-- 索引列 -->
            <el-table-column type="index" label="#"></el-table-column>
            <!-- 用户数据列 -->
            <el-table-column label="商品名称" prop="goods_name"></el-table-column>
            <el-table-column label="商品价格(元)" prop="goods_price" width="150px"></el-table-column>
            <el-table-column label="商品重量" prop="goods_weight" width="150px"></el-table-column>
            <el-table-column label="创建时间" prop="add_time" width="200px">
                <template slot-scope="scope">
                    {{scope.row.add_time | dateFormat}}  
                </template>
            </el-table-column>
            <el-table-column label="操作" width="180px">
                <template slot-scope="scope">
                    <!-- 作用域插槽是为了按钮能获取到当前行的数据 -->
                    <!-- 修改按钮 -->
                        <el-button type="primary" icon="el-icon-edit" size="small"></el-button>
                    <!-- 删除按钮 -->
                        <el-button type="danger" icon="el-icon-delete" size="small" @click="revmoeGoods(scope.row.goods_id)"></el-button>  
                </template>
            </el-table-column>   
        </el-table>

        <!-- 分页区域 -->
        <el-pagination  @size-change="handleSizeChange" @current-change="handleCurrentChange"
                :current-page="queryInfo.pagenum" :page-sizes="[5, 10, 15, 20]" :page-size="queryInfo.pagesize"
                 layout="total, sizes, prev, pager, next, jumper" :total="total" background>
        </el-pagination>
         
      </el-card> 
  </div>
</template>

<script>
export default {
    name:'List',
    data(){
        return{
            //商品数据
            goodsData:[],
            //总数据条数
            total:0,
            //查询参数对象
            queryInfo:{
                query:'',
                //第几页，默认显示第一页
                pagenum:1,
                //每页显示多少条数据
                pagesize:10
            },
        }
    },
    created(){
        /* 页面加载时初始化数据 */
        this.getGoodsListData();
    },
    methods: {
        /* 根据分页获取对应的商品列表 */
        async getGoodsListData(){
            const {data : res} = await this.$http.get('goods',{params:this.queryInfo});
            
            console.log('asda',res);
            if(res.meta.status !== 200){
                return this.$message.error('获取商品列表失败!');
            }
            this.goodsData = res.data.goods;
            this.total = res.data.total;
        },

        /* 当每页显示多少条数据发生改变时调用 */
        handleSizeChange(newSize){
            this.queryInfo.pagesize = newSize;
            this.getGoodsListData();
        },

        /* 当显示的页数发生改变时调用 */
        handleCurrentChange(newPage){
            this.queryInfo.pagenum = newPage;
            this.getGoodsListData();
        },
        /* 删除商品列表 */
        async revmoeGoods(goods_id){
            const confirmResult = await this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).catch(error => error)

            if(confirmResult !== 'confirm'){
                return this.$message.info('已取消删除!');
            }

            const {data: res} = await this.$http.delete('goods/' + goods_id);
            if(res.meta.status !== 200){
                return this.$message.error('删除失败!');
            }

            this.$message.success('删除成功');
            this.getGoodsListData();

        },

        /* 点击添加按钮添加商品 */
        goAddpage(){
            this.$router.push('/goods/add');
        }

    },
}
</script>

<style scoped>
    .el-table{
        margin-top: 20px;
    }
</style>